.@{prefix-cls}-tooltip {
  position: absolute;
  z-index: 1030;
  display: block;
  font-size: 12px;
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-weight: normal;
  line-height: 1.4;
  visibility: visible;
  opacity: .9;

  &-in {
    opacity: 0.9;
  }

  &-top {
    margin-top: -3px;
    padding: 5px 0;

    .@{prefix-cls}-tooltip-arrow {
      bottom: 0;
      left: 50%;
      margin-left: -@tooltipArrow;
      border-width: @tooltipArrow @tooltipArrow 0;
      border-top-color: @blackColor;
    }
  }
  &-right {
    margin-left: 3px;
    padding: 0 5px;

    .@{prefix-cls}-tooltip-arrow {
      top: 50%;
      left: 0;
      margin-top: -@tooltipArrow;
      border-width: @tooltipArrow @tooltipArrow @tooltipArrow 0;
      border-right-color: @blackColor;
    }
  }
  &-bottom {
    margin-top: 3px;
    padding: 5px 0;

    .@{prefix-cls}-tooltip-arrow {
      top: 0;
      left: 50%;
      margin-left: -@tooltipArrow;
      border-width: 0 @tooltipArrow @tooltipArrow;
      border-bottom-color: @blackColor;
    }
  }
  &-left {
    margin-left: -3px;
    padding: 0 5px;

    .@{prefix-cls}-tooltip-arrow {
      top: 50%;
      right: 0;
      margin-top: -@tooltipArrow;
      border-width: @tooltipArrow 0 @tooltipArrow @tooltipArrow;
      border-left-color: @blackColor;
    }
  }

  &-inner {
    max-width: 200px;
    padding: 9px 11px;
    color: @whiteColor;
    text-align: left;
    background-color: @blackColor;
    border-radius: 4px;
  }
  &-arrow {
    position: absolute;
    width: 0;
    height: 0;
    border-color: transparent;
    border-style: solid;
  }
}